When Registrars Spam You, What Can You Do?

tregoweth asks: "Today I received a spam that began, 'Register your domain name as a .ST domain too! Just go to: http://www.nic.st.' Normally I use SpamCop to find who to complain to, but...what do you do when a registrar (including NSI) is spamming you? Especially one that's violating its own rules against spamming?"

Here are the headers from tregoweth's SPAM message for those of you interested. It might be a good time to update those procmail filters:

Return-Path: <info@domain4u.st>
Received: from mate.pobox.com ([208.210.124.44])
by osgood.mail.mindspring.net (Mindspring Mail Service) with
ESMTP id t5i9v5.ukv.30ahi43
for <jyx@mindspring.com>; Sun, 7 Jan 2001 21:37:23 -0500 (EST)
Received: from mate.pobox.com (localhost [127.0.0.1])
by mate.pobox.com (Postfix) with ESMTP id 595687A192
for <jyx@mindspring.com>; Sun, 7 Jan 2001 21:37:23 -0500 (EST)
Received: from fep01-svc.swip.net (fep01.swip.net [130.244.199.129])
by mate.pobox.com (Postfix) with ESMTP
id 5A4AA7A1A3; Sun, 7 Jan 2001 21:37:22 -0500 (EST)
Received: from domain4u.st ([193.15.116.252]) by fep01-svc.swip.net
(InterMail vM.5.01.01.01 201-252-104) with SMTP
id <20010108023721.MDRP5361.fep01-svc.swip.net@domain4u.st>;
Mon, 8 Jan 2001 03:37:21 +0100
From: info@domain4u.st
Reply-To: info@domain4u.st
To: info@domain4u.st
Subject: Lock in your domain name now!
Message-Id: <20010108023721.MDRP5361.fep01-svc.swip.net@domain4u.st>
Date: Mon, 8 Jan 2001 03:37:21 +0100

For the record, www.domain4u.st and www.nic.st, the official registrar for Sao Tome, share the same IP address. Something smells fishy here. Is there anything that can be done about it?